Measurement of the Higgs boson total decay width using the H $\to$ WW $\to$ e$\nu \mu \nu$ decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Abstract

The Higgs boson (H) decay width is determined from the ratio of off- and on-shell production of H $\to$ WW $\to$ e$\nu \mu \nu$ using proton-proton collision data corresponding to an integrated luminosity of 138 fb${}^{-1}$ collected at $\sqrt{s}$ = 13 TeV by the CMS experiment at the Large Hadron Collider. The off-shell signal strength is measured as ${\mu }_{\text{off-shell}}$ = 1.2 ${}_{-0.7}^{+0.8}$. The Higgs boson total decay width is ${\Gamma }_{\text{H}}$ = 3.9 ${}_{-2.2}^{+2.7}$ MeV, in agreement with the standard model prediction. The uncertainty in this result represents a factor of three improvement over the previous CMS result in this decay channel.

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-24-011 (CMS Public Pages)

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